If required, rub with fine abrasive paper or lightly blast with suitable grit all the surface to which adhesive will be applied .

如果需要，使用细砂纸打磨或用适当的砂粒轻度喷吹所有的拟敷胶表面。

Repair or replace the electric brush; clean the commutator surface by abrasive paper and blow it clean.

修理或调换电刷，用木砂纸清理整流子表面，并吹净。

According to the problem that the remove of fiberglass is worse than metal material, grinding head with diamond abrasive is used to process the fiberglass column in this paper.

文中主要针对玻璃钢件切削加工性较差的问题，采用带有金刚石磨粒磨头对玻璃柱件进行加工。